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1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,98,1999,2001,02,03,2004
3 Free Software Foundation, Inc.
4
5 This file is part of GNU Emacs.
6
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
11
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
21
22
23 #include <config.h>
24 #include <signal.h>
25 #include <errno.h>
26 #include <stdio.h>
27
28 #include <sys/types.h>
29 #include <sys/file.h>
30
31 #ifdef VMS
32 #include <ssdef.h>
33 #endif
34
35 #ifdef HAVE_UNISTD_H
36 #include <unistd.h>
37 #endif
38
39 #ifdef BSD_SYSTEM
40 #include <sys/ioctl.h>
41 #endif
42
43 #ifdef WINDOWSNT
44 #include <fcntl.h>
45 #endif
46
47 #include "lisp.h"
48 #include "commands.h"
49 #include "intervals.h"
50 #include "buffer.h"
51 #include "window.h"
52
53 #include "systty.h"
54 #include "blockinput.h"
55 #include "syssignal.h"
56 #include "process.h"
57 #include "termhooks.h"
58 #include "keyboard.h"
59 #include "keymap.h"
60
61 #ifdef HAVE_SETLOCALE
62 #include <locale.h>
63 #endif
64
65 #ifdef HAVE_SETRLIMIT
66 #include <sys/time.h>
67 #include <sys/resource.h>
68 #endif
69
70 #ifdef HAVE_PERSONALITY_LINUX32
71 #include <sys/personality.h>
72 #endif
73
74 #ifndef O_RDWR
75 #define O_RDWR 2
76 #endif
77
78 #ifdef HAVE_SETPGID
79 #if !defined (USG) || defined (BSD_PGRPS)
80 #undef setpgrp
81 #define setpgrp setpgid
82 #endif
83 #endif
84
85 extern void malloc_warning P_ ((char *));
86 extern void set_time_zone_rule P_ ((char *));
87 #ifdef HAVE_INDEX
88 extern char *index P_ ((const char *, int));
89 #endif
90
91 /* Make these values available in GDB, which doesn't see macros. */
92
93 #ifdef USE_LSB_TAG
94 int gdb_use_lsb = 1;
95 #else
96 int gdb_use_lsb = 0;
97 #endif
98 #ifdef NO_UNION_TYPE
99 int gdb_use_union = 0;
100 #else
101 int gdb_use_union = 1;
102 #endif
103 EMACS_INT gdb_valbits = VALBITS;
104 EMACS_INT gdb_gctypebits = GCTYPEBITS;
105 #ifdef DATA_SEG_BITS
106 EMACS_INT gdb_data_seg_bits = DATA_SEG_BITS;
107 #else
108 EMACS_INT gdb_data_seg_bits = 0;
109 #endif
110 EMACS_INT PVEC_FLAG = PSEUDOVECTOR_FLAG;
111 EMACS_INT gdb_array_mark_flag = ARRAY_MARK_FLAG;
112
113 /* Command line args from shell, as list of strings. */
114 Lisp_Object Vcommand_line_args;
115
116 /* The name under which Emacs was invoked, with any leading directory
117 names discarded. */
118 Lisp_Object Vinvocation_name;
119
120 /* The directory name from which Emacs was invoked. */
121 Lisp_Object Vinvocation_directory;
122
123 /* The directory name in which to find subdirs such as lisp and etc.
124 nil means get them only from PATH_LOADSEARCH. */
125 Lisp_Object Vinstallation_directory;
126
127 /* Hook run by `kill-emacs' before it does really anything. */
128 Lisp_Object Vkill_emacs_hook;
129
130 /* An empty lisp string. To avoid having to build any other. */
131 Lisp_Object empty_string;
132
133 /* Search path separator. */
134 Lisp_Object Vpath_separator;
135
136 /* Set nonzero after Emacs has started up the first time.
137 Prevents reinitialization of the Lisp world and keymaps
138 on subsequent starts. */
139 int initialized;
140
141 #ifdef DOUG_LEA_MALLOC
142 /* Preserves a pointer to the memory allocated that copies that
143 static data inside glibc's malloc. */
144 void *malloc_state_ptr;
145 /* From glibc, a routine that returns a copy of the malloc internal state. */
146 extern void *malloc_get_state ();
147 /* From glibc, a routine that overwrites the malloc internal state. */
148 extern void malloc_set_state ();
149 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
150 dumping. Used to work around a bug in glibc's malloc. */
151 int malloc_using_checking;
152 #endif
153
154 /* Variable whose value is symbol giving operating system type. */
155 Lisp_Object Vsystem_type;
156
157 /* Variable whose value is string giving configuration built for. */
158 Lisp_Object Vsystem_configuration;
159
160 /* Variable whose value is string giving configuration options,
161 for use when reporting bugs. */
162 Lisp_Object Vsystem_configuration_options;
163
164 Lisp_Object Qfile_name_handler_alist;
165
166 /* Current and previous system locales for messages and time. */
167 Lisp_Object Vsystem_messages_locale;
168 Lisp_Object Vprevious_system_messages_locale;
169 Lisp_Object Vsystem_time_locale;
170 Lisp_Object Vprevious_system_time_locale;
171
172 /* If non-zero, emacs should not attempt to use a window-specific code,
173 but instead should use the virtual terminal under which it was started. */
174 int inhibit_window_system;
175
176 /* If nonzero, set Emacs to run at this priority. This is also used
177 in child_setup and sys_suspend to make sure subshells run at normal
178 priority; those functions have their own extern declaration. */
179 EMACS_INT emacs_priority;
180
181 /* If non-zero, a filter or a sentinel is running. Tested to save the match
182 data on the first attempt to change it inside asynchronous code. */
183 int running_asynch_code;
184
185 #ifdef BSD_PGRPS
186 /* See sysdep.c. */
187 extern int inherited_pgroup;
188 #endif
189
190 #ifdef HAVE_X_WINDOWS
191 /* If non-zero, -d was specified, meaning we're using some window system. */
192 int display_arg;
193 #endif
194
195 /* An address near the bottom of the stack.
196 Tells GC how to save a copy of the stack. */
197 char *stack_bottom;
198
199 /* The address where the heap starts (from the first sbrk (0) call). */
200 static void *my_heap_start;
201
202 /* The gap between BSS end and heap start as far as we can tell. */
203 static unsigned long heap_bss_diff;
204
205 /* If the gap between BSS end and heap start is larger than this we try to
206 work around it, and if that fails, output a warning in dump-emacs. */
207 #define MAX_HEAP_BSS_DIFF (1024*1024)
208
209
210 #ifdef HAVE_WINDOW_SYSTEM
211 extern Lisp_Object Vwindow_system;
212 #endif /* HAVE_WINDOW_SYSTEM */
213
214 extern Lisp_Object Vauto_save_list_file_name;
215
216 extern Lisp_Object Vinhibit_redisplay;
217
218 #ifdef USG_SHARED_LIBRARIES
219 /* If nonzero, this is the place to put the end of the writable segment
220 at startup. */
221
222 unsigned int bss_end = 0;
223 #endif
224
225 /* Nonzero means running Emacs without interactive terminal. */
226
227 int noninteractive;
228
229 /* Value of Lisp variable `noninteractive'.
230 Normally same as C variable `noninteractive'
231 but nothing terrible happens if user sets this one. */
232
233 int noninteractive1;
234
235 /* Save argv and argc. */
236 char **initial_argv;
237 int initial_argc;
238
239 static void sort_args ();
240 void syms_of_emacs ();
241
242 /* MSVC needs each string be shorter than 2048 bytes, so the usage
243 strings below are split to not overflow this limit. */
244 #define USAGE1 "\
245 Usage: %s [OPTION-OR-FILENAME]...\n\
246 \n\
247 Run Emacs, the extensible, customizable, self-documenting real-time\n\
248 display editor. The recommended way to start Emacs for normal editing\n\
249 is with no options at all.\n\
250 \n\
251 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
252 read the main documentation for these command-line arguments.\n\
253 \n\
254 Initialization options:\n\
255 \n\
256 --batch do not do interactive display; implies -q\n\
257 --debug-init enable Emacs Lisp debugger for init file\n\
258 --display, -d DISPLAY use X server DISPLAY\n\
259 --multibyte, --no-unibyte inhibit the effect of EMACS_UNIBYTE\n\
260 --no-desktop do not load a saved desktop\n\
261 --no-init-file, -q load neither ~/.emacs nor default.el\n\
262 --no-shared-memory, -nl do not use shared memory\n\
263 --no-site-file do not load site-start.el\n\
264 --no-splash do not display a splash screen on startup\n\
265 --no-window-system, -nw don't communicate with X, ignoring $DISPLAY\n\
266 --script FILE run FILE as an Emacs Lisp script\n\
267 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
268 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
269 --user, -u USER load ~USER/.emacs instead of your own\n\
270 \n%s"
271
272 #define USAGE2 "\
273 Action options:\n\
274 \n\
275 FILE visit FILE using find-file\n\
276 +LINE FILE visit FILE using find-file, then go to line LINE\n\
277 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
278 column COLUMN\n\
279 --directory, -L DIR add DIR to variable load-path\n\
280 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
281 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
282 --file FILE visit FILE using find-file\n\
283 --find-file FILE visit FILE using find-file\n\
284 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
285 --insert FILE insert contents of FILE into current buffer\n\
286 --kill exit without asking for confirmation\n\
287 --load, -l FILE load Emacs Lisp FILE using the load function\n\
288 --visit FILE visit FILE using find-file\n\
289 \n"
290
291 #define USAGE3 "\
292 Display options:\n\
293 \n\
294 --background-color, -bg COLOR window background color\n\
295 --border-color, -bd COLOR main border color\n\
296 --border-width, -bw WIDTH width of main border\n\
297 --color MODE color mode for character terminals;\n\
298 MODE defaults to `auto', and can also\n\
299 be `never', `auto', `always',\n\
300 or a mode name like `ansi8'\n\
301 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
302 --font, -fn FONT default font; must be fixed-width\n\
303 --foreground-color, -fg COLOR window foreground color\n\
304 --fullheight, -fh make the first frame high as the screen\n\
305 --fullscreen, -fs make first frame fullscreen\n\
306 --fullwidth, -fw make the first frame wide as the screen\n\
307 --geometry, -g GEOMETRY window geometry\n\
308 --icon-type, -i use picture of gnu for Emacs icon\n\
309 --iconic start Emacs in iconified state\n\
310 --internal-border, -ib WIDTH width between text and main border\n\
311 --line-spacing, -lsp PIXELS additional space to put between lines\n\
312 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
313 --name NAME title for initial Emacs frame\n\
314 --reverse-video, -r, -rv switch foreground and background\n\
315 --title, -T TITLE title for initial Emacs frame\n\
316 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
317 --xrm XRESOURCES set additional X resources\n\
318 --help display this help and exit\n\
319 --version output version information and exit\n\
320 \n\
321 You can generally also specify long option names with a single -; for\n\
322 example, -batch as well as --batch. You can use any unambiguous\n\
323 abbreviation for a --option.\n\
324 \n\
325 Various environment variables and window system resources also affect\n\
326 Emacs' operation. See the main documentation.\n\
327 \n"
328
329 #define USAGE4 "\
330 Report bugs to %s. First, please see the Bugs\n\
331 section of the Emacs manual or the file BUGS.\n"
332
333 \f
334 /* Signal code for the fatal signal that was received. */
335 int fatal_error_code;
336
337 /* Nonzero if handling a fatal error already. */
338 int fatal_error_in_progress;
339
340 /* If non-null, call this function from fatal_error_signal before
341 committing suicide. */
342
343 void (*fatal_error_signal_hook) P_ ((void));
344
345
346 #ifdef SIGUSR1
347 SIGTYPE
348 handle_USR1_signal (sig)
349 int sig;
350 {
351 struct input_event buf;
352
353 bzero (&buf, sizeof buf);
354 buf.kind = USER_SIGNAL_EVENT;
355 buf.frame_or_window = selected_frame;
356
357 kbd_buffer_store_event (&buf);
358 }
359 #endif /* SIGUSR1 */
360
361 #ifdef SIGUSR2
362 SIGTYPE
363 handle_USR2_signal (sig)
364 int sig;
365 {
366 struct input_event buf;
367
368 bzero (&buf, sizeof buf);
369 buf.kind = USER_SIGNAL_EVENT;
370 buf.code = 1;
371 buf.frame_or_window = selected_frame;
372
373 kbd_buffer_store_event (&buf);
374 }
375 #endif /* SIGUSR2 */
376
377 /* Handle bus errors, invalid instruction, etc. */
378 SIGTYPE
379 fatal_error_signal (sig)
380 int sig;
381 {
382 fatal_error_code = sig;
383 signal (sig, SIG_DFL);
384
385 TOTALLY_UNBLOCK_INPUT;
386
387 /* If fatal error occurs in code below, avoid infinite recursion. */
388 if (! fatal_error_in_progress)
389 {
390 fatal_error_in_progress = 1;
391
392 shut_down_emacs (sig, 0, Qnil);
393 }
394
395 #ifdef VMS
396 LIB$STOP (SS$_ABORT);
397 #else
398 /* Signal the same code; this time it will really be fatal.
399 Remember that since we're in a signal handler, the signal we're
400 going to send is probably blocked, so we have to unblock it if we
401 want to really receive it. */
402 #ifndef MSDOS
403 sigunblock (sigmask (fatal_error_code));
404 #endif
405
406 if (fatal_error_signal_hook)
407 fatal_error_signal_hook ();
408
409 kill (getpid (), fatal_error_code);
410 #endif /* not VMS */
411 }
412
413 #ifdef SIGDANGER
414
415 /* Handler for SIGDANGER. */
416 SIGTYPE
417 memory_warning_signal (sig)
418 int sig;
419 {
420 signal (sig, memory_warning_signal);
421
422 malloc_warning ("Operating system warns that virtual memory is running low.\n");
423
424 /* It might be unsafe to call do_auto_save now. */
425 force_auto_save_soon ();
426 }
427 #endif
428
429 /* We define abort, rather than using it from the library,
430 so that GDB can return from a breakpoint here.
431 MSDOS has its own definition in msdos.c. */
432
433 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
434
435 #ifndef ABORT_RETURN_TYPE
436 #define ABORT_RETURN_TYPE void
437 #endif
438
439 ABORT_RETURN_TYPE
440 abort ()
441 {
442 kill (getpid (), SIGABRT);
443 /* This shouldn't be executed, but it prevents a warning. */
444 exit (1);
445 }
446 #endif
447
448 \f
449 /* Code for dealing with Lisp access to the Unix command line. */
450
451 static void
452 init_cmdargs (argc, argv, skip_args)
453 int argc;
454 char **argv;
455 int skip_args;
456 {
457 register int i;
458 Lisp_Object name, dir, tem;
459 int count = SPECPDL_INDEX ();
460 Lisp_Object raw_name;
461
462 initial_argv = argv;
463 initial_argc = argc;
464
465 raw_name = build_string (argv[0]);
466
467 /* Add /: to the front of the name
468 if it would otherwise be treated as magic. */
469 tem = Ffind_file_name_handler (raw_name, Qt);
470 if (! NILP (tem))
471 raw_name = concat2 (build_string ("/:"), raw_name);
472
473 Vinvocation_name = Ffile_name_nondirectory (raw_name);
474 Vinvocation_directory = Ffile_name_directory (raw_name);
475
476 /* If we got no directory in argv[0], search PATH to find where
477 Emacs actually came from. */
478 if (NILP (Vinvocation_directory))
479 {
480 Lisp_Object found;
481 int yes = openp (Vexec_path, Vinvocation_name,
482 Vexec_suffixes, &found, make_number (X_OK));
483 if (yes == 1)
484 {
485 /* Add /: to the front of the name
486 if it would otherwise be treated as magic. */
487 tem = Ffind_file_name_handler (found, Qt);
488 if (! NILP (tem))
489 found = concat2 (build_string ("/:"), found);
490 Vinvocation_directory = Ffile_name_directory (found);
491 }
492 }
493
494 if (!NILP (Vinvocation_directory)
495 && NILP (Ffile_name_absolute_p (Vinvocation_directory)))
496 /* Emacs was started with relative path, like ./emacs.
497 Make it absolute. */
498 Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil);
499
500 Vinstallation_directory = Qnil;
501
502 if (!NILP (Vinvocation_directory))
503 {
504 dir = Vinvocation_directory;
505 name = Fexpand_file_name (Vinvocation_name, dir);
506 while (1)
507 {
508 Lisp_Object tem, lib_src_exists;
509 Lisp_Object etc_exists, info_exists;
510
511 /* See if dir contains subdirs for use by Emacs.
512 Check for the ones that would exist in a build directory,
513 not including lisp and info. */
514 tem = Fexpand_file_name (build_string ("lib-src"), dir);
515 lib_src_exists = Ffile_exists_p (tem);
516
517 #ifdef MSDOS
518 /* MSDOS installations frequently remove lib-src, but we still
519 must set installation-directory, or else info won't find
520 its files (it uses the value of installation-directory). */
521 tem = Fexpand_file_name (build_string ("info"), dir);
522 info_exists = Ffile_exists_p (tem);
523 #else
524 info_exists = Qnil;
525 #endif
526
527 if (!NILP (lib_src_exists) || !NILP (info_exists))
528 {
529 tem = Fexpand_file_name (build_string ("etc"), dir);
530 etc_exists = Ffile_exists_p (tem);
531 if (!NILP (etc_exists))
532 {
533 Vinstallation_directory
534 = Ffile_name_as_directory (dir);
535 break;
536 }
537 }
538
539 /* See if dir's parent contains those subdirs. */
540 tem = Fexpand_file_name (build_string ("../lib-src"), dir);
541 lib_src_exists = Ffile_exists_p (tem);
542
543
544 #ifdef MSDOS
545 /* See the MSDOS commentary above. */
546 tem = Fexpand_file_name (build_string ("../info"), dir);
547 info_exists = Ffile_exists_p (tem);
548 #else
549 info_exists = Qnil;
550 #endif
551
552 if (!NILP (lib_src_exists) || !NILP (info_exists))
553 {
554 tem = Fexpand_file_name (build_string ("../etc"), dir);
555 etc_exists = Ffile_exists_p (tem);
556 if (!NILP (etc_exists))
557 {
558 tem = Fexpand_file_name (build_string (".."), dir);
559 Vinstallation_directory
560 = Ffile_name_as_directory (tem);
561 break;
562 }
563 }
564
565 /* If the Emacs executable is actually a link,
566 next try the dir that the link points into. */
567 tem = Ffile_symlink_p (name);
568 if (!NILP (tem))
569 {
570 name = Fexpand_file_name (tem, dir);
571 dir = Ffile_name_directory (name);
572 }
573 else
574 break;
575 }
576 }
577
578 Vcommand_line_args = Qnil;
579
580 for (i = argc - 1; i >= 0; i--)
581 {
582 if (i == 0 || i > skip_args)
583 Vcommand_line_args
584 = Fcons (build_string (argv[i]), Vcommand_line_args);
585 }
586
587 unbind_to (count, Qnil);
588 }
589
590 DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
591 doc: /* Return the program name that was used to run Emacs.
592 Any directory names are omitted. */)
593 ()
594 {
595 return Fcopy_sequence (Vinvocation_name);
596 }
597
598 DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
599 0, 0, 0,
600 doc: /* Return the directory name in which the Emacs executable was located. */)
601 ()
602 {
603 return Fcopy_sequence (Vinvocation_directory);
604 }
605
606 \f
607 #ifdef VMS
608 #ifdef LINK_CRTL_SHARE
609 #ifdef SHARABLE_LIB_BUG
610 extern noshare char **environ;
611 #endif /* SHARABLE_LIB_BUG */
612 #endif /* LINK_CRTL_SHARE */
613 #endif /* VMS */
614
615 #ifdef HAVE_TZSET
616 /* A valid but unlikely value for the TZ environment value.
617 It is OK (though a bit slower) if the user actually chooses this value. */
618 static char dump_tz[] = "UtC0";
619 #endif
620
621 #ifndef ORDINARY_LINK
622 /* We don't include crtbegin.o and crtend.o in the link,
623 so these functions and variables might be missed.
624 Provide dummy definitions to avoid error.
625 (We don't have any real constructors or destructors.) */
626 #ifdef __GNUC__
627 #ifndef GCC_CTORS_IN_LIBC
628 void __do_global_ctors ()
629 {}
630 void __do_global_ctors_aux ()
631 {}
632 void __do_global_dtors ()
633 {}
634 /* GNU/Linux has a bug in its library; avoid an error. */
635 #ifndef GNU_LINUX
636 char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
637 #endif
638 char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
639 #endif /* GCC_CTORS_IN_LIBC */
640 void __main ()
641 {}
642 #endif /* __GNUC__ */
643 #endif /* ORDINARY_LINK */
644
645 /* Test whether the next argument in ARGV matches SSTR or a prefix of
646 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
647 (the argument is supposed to have a value) store in *VALPTR either
648 the next argument or the portion of this one after the equal sign.
649 ARGV is read starting at position *SKIPPTR; this index is advanced
650 by the number of arguments used.
651
652 Too bad we can't just use getopt for all of this, but we don't have
653 enough information to do it right. */
654
655 static int
656 argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr)
657 char **argv;
658 int argc;
659 char *sstr;
660 char *lstr;
661 int minlen;
662 char **valptr;
663 int *skipptr;
664 {
665 char *p = NULL;
666 int arglen;
667 char *arg;
668
669 /* Don't access argv[argc]; give up in advance. */
670 if (argc <= *skipptr + 1)
671 return 0;
672
673 arg = argv[*skipptr+1];
674 if (arg == NULL)
675 return 0;
676 if (strcmp (arg, sstr) == 0)
677 {
678 if (valptr != NULL)
679 {
680 *valptr = argv[*skipptr+2];
681 *skipptr += 2;
682 }
683 else
684 *skipptr += 1;
685 return 1;
686 }
687 arglen = (valptr != NULL && (p = index (arg, '=')) != NULL
688 ? p - arg : strlen (arg));
689 if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
690 return 0;
691 else if (valptr == NULL)
692 {
693 *skipptr += 1;
694 return 1;
695 }
696 else if (p != NULL)
697 {
698 *valptr = p+1;
699 *skipptr += 1;
700 return 1;
701 }
702 else if (argv[*skipptr+2] != NULL)
703 {
704 *valptr = argv[*skipptr+2];
705 *skipptr += 2;
706 return 1;
707 }
708 else
709 {
710 return 0;
711 }
712 }
713
714 #ifdef DOUG_LEA_MALLOC
715
716 /* malloc can be invoked even before main (e.g. by the dynamic
717 linker), so the dumped malloc state must be restored as early as
718 possible using this special hook. */
719
720 static void
721 malloc_initialize_hook ()
722 {
723 #ifndef USE_CRT_DLL
724 extern char **environ;
725 #endif
726
727 if (initialized)
728 {
729 if (!malloc_using_checking)
730 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
731 ignored if the heap to be restored was constructed without
732 malloc checking. Can't use unsetenv, since that calls malloc. */
733 {
734 char **p;
735
736 for (p = environ; p && *p; p++)
737 if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0)
738 {
739 do
740 *p = p[1];
741 while (*++p);
742 break;
743 }
744 }
745
746 malloc_set_state (malloc_state_ptr);
747 free (malloc_state_ptr);
748 }
749 else
750 {
751 if (my_heap_start == 0)
752 my_heap_start = sbrk (0);
753 malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL;
754 }
755 }
756
757 void (*__malloc_initialize_hook) () = malloc_initialize_hook;
758
759 #endif /* DOUG_LEA_MALLOC */
760
761
762 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
763 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
764
765 /* This function is used to determine an address to which bug report should
766 be sent. */
767
768 char *
769 bug_reporting_address ()
770 {
771 int count = 0;
772 Lisp_Object temp;
773 char *string;
774
775 temp = Fsymbol_value (intern ("emacs-version"));
776
777 /* When `emacs-version' is invalid, use normal address. */
778 if (!STRINGP(temp))
779 return REPORT_EMACS_BUG_ADDRESS;
780
781 string = SDATA (temp);
782
783 /* Count dots in `emacs-version'. */
784 while (*string)
785 {
786 if (*string == '.')
787 count++;
788 string++;
789 }
790
791 /* When `emacs-version' has at least three dots, it is development or
792 pretest version of Emacs. */
793 return count >= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS : REPORT_EMACS_BUG_ADDRESS;
794 }
795
796
797 /* ARGSUSED */
798 int
799 main (argc, argv
800 #ifdef VMS
801 , envp
802 #endif
803 )
804 int argc;
805 char **argv;
806 #ifdef VMS
807 char **envp;
808 #endif
809 {
810 #if GC_MARK_STACK
811 Lisp_Object dummy;
812 #endif
813 char stack_bottom_variable;
814 int do_initial_setlocale;
815 int skip_args = 0;
816 #ifndef USE_CRT_DLL
817 extern int errno;
818 #endif
819 #ifdef HAVE_SETRLIMIT
820 struct rlimit rlim;
821 #endif
822 int no_loadup = 0;
823 char *junk = 0;
824
825 #if GC_MARK_STACK
826 extern Lisp_Object *stack_base;
827 stack_base = &dummy;
828 #endif
829
830 if (!initialized)
831 {
832 extern char my_endbss[];
833 extern char *my_endbss_static;
834
835 if (my_heap_start == 0)
836 my_heap_start = sbrk (0);
837
838 heap_bss_diff = (char *)my_heap_start - max (my_endbss, my_endbss_static);
839 }
840
841 #ifdef LINUX_SBRK_BUG
842 __sbrk (1);
843 #endif
844
845 #ifdef RUN_TIME_REMAP
846 if (initialized)
847 run_time_remap (argv[0]);
848 #endif
849
850 #ifdef MAC_OSX
851 if (!initialized)
852 unexec_init_emacs_zone ();
853 #endif
854
855 sort_args (argc, argv);
856 argc = 0;
857 while (argv[argc]) argc++;
858
859 if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)
860 /* We don't know the version number unless this is a dumped Emacs.
861 So ignore --version otherwise. */
862 && initialized)
863 {
864 Lisp_Object tem;
865 tem = Fsymbol_value (intern ("emacs-version"));
866 if (!STRINGP (tem))
867 {
868 fprintf (stderr, "Invalid value of `emacs-version'\n");
869 exit (1);
870 }
871 else
872 {
873 printf ("GNU Emacs %s\n", SDATA (tem));
874 printf ("Copyright (C) 2004 Free Software Foundation, Inc.\n");
875 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
876 printf ("You may redistribute copies of Emacs\n");
877 printf ("under the terms of the GNU General Public License.\n");
878 printf ("For more information about these matters, ");
879 printf ("see the file named COPYING.\n");
880 exit (0);
881 }
882 }
883
884 #ifdef HAVE_PERSONALITY_LINUX32
885 /* See if there is a gap between the end of BSS and the heap.
886 In that case, set personality and exec ourself again. */
887 if (!initialized
888 && (strcmp (argv[argc-1], "dump") == 0
889 || strcmp (argv[argc-1], "bootstrap") == 0)
890 && heap_bss_diff > MAX_HEAP_BSS_DIFF)
891 {
892 if (! getenv ("EMACS_HEAP_EXEC"))
893 {
894 /* Set this so we only do this once. */
895 putenv("EMACS_HEAP_EXEC=true");
896 personality (PER_LINUX32);
897 execvp (argv[0], argv);
898
899 /* If the exec fails, try to dump anyway. */
900 perror ("execvp");
901 }
902 }
903 #endif /* HAVE_PERSONALITY_LINUX32 */
904
905
906 /* Map in shared memory, if we are using that. */
907 #ifdef HAVE_SHM
908 if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args))
909 {
910 map_in_data (0);
911 /* The shared memory was just restored, which clobbered this. */
912 skip_args = 1;
913 }
914 else
915 {
916 map_in_data (1);
917 /* The shared memory was just restored, which clobbered this. */
918 skip_args = 0;
919 }
920 #endif
921
922 #ifdef NeXT
923 {
924 extern int malloc_cookie;
925 /* This helps out unexnext.c. */
926 if (initialized)
927 if (malloc_jumpstart (malloc_cookie) != 0)
928 printf ("malloc jumpstart failed!\n");
929 }
930 #endif /* NeXT */
931
932 #ifdef MAC_OSX
933 /* Skip process serial number passed in the form -psn_x_y as
934 command-line argument. */
935 if (argc > skip_args + 1 && strncmp (argv[skip_args+1], "-psn_", 5) == 0)
936 skip_args++;
937 #endif /* MAC_OSX */
938
939 #ifdef VMS
940 /* If -map specified, map the data file in. */
941 {
942 char *file;
943 if (argmatch (argv, argc, "-map", "--map-data", 3, &file, &skip_args))
944 mapin_data (file);
945 }
946
947 #ifdef LINK_CRTL_SHARE
948 #ifdef SHARABLE_LIB_BUG
949 /* Bletcherous shared libraries! */
950 if (!stdin)
951 stdin = fdopen (0, "r");
952 if (!stdout)
953 stdout = fdopen (1, "w");
954 if (!stderr)
955 stderr = fdopen (2, "w");
956 if (!environ)
957 environ = envp;
958 #endif /* SHARABLE_LIB_BUG */
959 #endif /* LINK_CRTL_SHARE */
960 #endif /* VMS */
961
962 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
963 /* Extend the stack space available.
964 Don't do that if dumping, since some systems (e.g. DJGPP)
965 might define a smaller stack limit at that time. */
966 if (1
967 #ifndef CANNOT_DUMP
968 && (!noninteractive || initialized)
969 #endif
970 && !getrlimit (RLIMIT_STACK, &rlim))
971 {
972 long newlim;
973 extern int re_max_failures;
974 /* Approximate the amount regex.c needs per unit of re_max_failures. */
975 int ratio = 20 * sizeof (char *);
976 /* Then add 33% to cover the size of the smaller stacks that regex.c
977 successively allocates and discards, on its way to the maximum. */
978 ratio += ratio / 3;
979 /* Add in some extra to cover
980 what we're likely to use for other reasons. */
981 newlim = re_max_failures * ratio + 200000;
982 #ifdef __NetBSD__
983 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
984 stack allocation routine for new process that the allocation
985 fails if stack limit is not on page boundary. So, round up the
986 new limit to page boundary. */
987 newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize();
988 #endif
989 if (newlim > rlim.rlim_max)
990 {
991 newlim = rlim.rlim_max;
992 /* Don't let regex.c overflow the stack we have. */
993 re_max_failures = (newlim - 200000) / ratio;
994 }
995 if (rlim.rlim_cur < newlim)
996 rlim.rlim_cur = newlim;
997
998 setrlimit (RLIMIT_STACK, &rlim);
999 }
1000 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
1001
1002 /* Record (approximately) where the stack begins. */
1003 stack_bottom = &stack_bottom_variable;
1004
1005 #ifdef USG_SHARED_LIBRARIES
1006 if (bss_end)
1007 brk ((void *)bss_end);
1008 #endif
1009
1010 clearerr (stdin);
1011
1012 #ifndef SYSTEM_MALLOC
1013 /* Arrange to get warning messages as memory fills up. */
1014 memory_warnings (0, malloc_warning);
1015
1016 /* Call malloc at least once, to run the initial __malloc_hook.
1017 Also call realloc and free for consistency. */
1018 free (realloc (malloc (4), 4));
1019
1020 /* Arrange to disable interrupt input inside malloc etc. */
1021 uninterrupt_malloc ();
1022 #endif /* not SYSTEM_MALLOC */
1023
1024 #if defined (MSDOS) || defined (WINDOWSNT)
1025 /* We do all file input/output as binary files. When we need to translate
1026 newlines, we do that manually. */
1027 _fmode = O_BINARY;
1028 #endif /* MSDOS || WINDOWSNT */
1029
1030 #ifdef MSDOS
1031 #if __DJGPP__ >= 2
1032 if (!isatty (fileno (stdin)))
1033 setmode (fileno (stdin), O_BINARY);
1034 if (!isatty (fileno (stdout)))
1035 {
1036 fflush (stdout);
1037 setmode (fileno (stdout), O_BINARY);
1038 }
1039 #else /* not __DJGPP__ >= 2 */
1040 (stdin)->_flag &= ~_IOTEXT;
1041 (stdout)->_flag &= ~_IOTEXT;
1042 (stderr)->_flag &= ~_IOTEXT;
1043 #endif /* not __DJGPP__ >= 2 */
1044 #endif /* MSDOS */
1045
1046 #ifdef SET_EMACS_PRIORITY
1047 if (emacs_priority)
1048 nice (emacs_priority);
1049 setuid (getuid ());
1050 #endif /* SET_EMACS_PRIORITY */
1051
1052 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
1053 The build procedure uses this while dumping, to ensure that the
1054 dumped Emacs does not have its system locale tables initialized,
1055 as that might cause screwups when the dumped Emacs starts up. */
1056 {
1057 char *lc_all = getenv ("LC_ALL");
1058 do_initial_setlocale = ! lc_all || strcmp (lc_all, "C");
1059 }
1060
1061 /* Set locale now, so that initial error messages are localized properly.
1062 fixup_locale must wait until later, since it builds strings. */
1063 if (do_initial_setlocale)
1064 setlocale (LC_ALL, "");
1065
1066 #ifdef EXTRA_INITIALIZE
1067 EXTRA_INITIALIZE;
1068 #endif
1069
1070 inhibit_window_system = 0;
1071
1072 /* Handle the -t switch, which specifies filename to use as terminal. */
1073 while (1)
1074 {
1075 char *term;
1076 if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
1077 {
1078 int result;
1079 emacs_close (0);
1080 emacs_close (1);
1081 result = emacs_open (term, O_RDWR, 0);
1082 if (result < 0)
1083 {
1084 char *errstring = strerror (errno);
1085 fprintf (stderr, "%s: %s: %s\n", argv[0], term, errstring);
1086 exit (1);
1087 }
1088 dup (0);
1089 if (! isatty (0))
1090 {
1091 fprintf (stderr, "%s: %s: not a tty\n", argv[0], term);
1092 exit (1);
1093 }
1094 fprintf (stderr, "Using %s\n", term);
1095 #ifdef HAVE_WINDOW_SYSTEM
1096 inhibit_window_system = 1; /* -t => -nw */
1097 #endif
1098 }
1099 else
1100 break;
1101 }
1102
1103 /* Command line option --no-windows is deprecated and thus not mentioned
1104 in the manual and usage informations. */
1105 if (argmatch (argv, argc, "-nw", "--no-window-system", 6, NULL, &skip_args)
1106 || argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
1107 inhibit_window_system = 1;
1108
1109 /* Handle the -batch switch, which means don't do interactive display. */
1110 noninteractive = 0;
1111 if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
1112 noninteractive = 1;
1113 if (argmatch (argv, argc, "-script", "--script", 3, &junk, &skip_args))
1114 {
1115 noninteractive = 1; /* Set batch mode. */
1116 /* Convert --script to -l, un-skip it, and sort again so that -l will be
1117 handled in proper sequence. */
1118 argv[skip_args - 1] = "-l";
1119 skip_args -= 2;
1120 sort_args (argc, argv);
1121 }
1122
1123 /* Handle the --help option, which gives a usage message. */
1124 if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
1125 {
1126 printf (USAGE1, argv[0], USAGE2);
1127 printf (USAGE3);
1128 printf (USAGE4, bug_reporting_address ());
1129 exit (0);
1130 }
1131
1132 if (! noninteractive)
1133 {
1134 #ifdef BSD_PGRPS
1135 if (initialized)
1136 {
1137 inherited_pgroup = EMACS_GETPGRP (0);
1138 setpgrp (0, getpid ());
1139 }
1140 #else
1141 #if defined (USG5) && defined (INTERRUPT_INPUT)
1142 setpgrp ();
1143 #endif
1144 #endif
1145 }
1146
1147 init_signals ();
1148
1149 /* Don't catch SIGHUP if dumping. */
1150 if (1
1151 #ifndef CANNOT_DUMP
1152 && initialized
1153 #endif
1154 )
1155 {
1156 sigblock (sigmask (SIGHUP));
1157 /* In --batch mode, don't catch SIGHUP if already ignored.
1158 That makes nohup work. */
1159 if (! noninteractive
1160 || signal (SIGHUP, SIG_IGN) != SIG_IGN)
1161 signal (SIGHUP, fatal_error_signal);
1162 sigunblock (sigmask (SIGHUP));
1163 }
1164
1165 if (
1166 #ifndef CANNOT_DUMP
1167 ! noninteractive || initialized
1168 #else
1169 1
1170 #endif
1171 )
1172 {
1173 /* Don't catch these signals in batch mode if dumping.
1174 On some machines, this sets static data that would make
1175 signal fail to work right when the dumped Emacs is run. */
1176 signal (SIGQUIT, fatal_error_signal);
1177 signal (SIGILL, fatal_error_signal);
1178 signal (SIGTRAP, fatal_error_signal);
1179 #ifdef SIGUSR1
1180 signal (SIGUSR1, handle_USR1_signal);
1181 #ifdef SIGUSR2
1182 signal (SIGUSR2, handle_USR2_signal);
1183 #endif
1184 #endif
1185 #ifdef SIGABRT
1186 signal (SIGABRT, fatal_error_signal);
1187 #endif
1188 #ifdef SIGHWE
1189 signal (SIGHWE, fatal_error_signal);
1190 #endif
1191 #ifdef SIGPRE
1192 signal (SIGPRE, fatal_error_signal);
1193 #endif
1194 #ifdef SIGORE
1195 signal (SIGORE, fatal_error_signal);
1196 #endif
1197 #ifdef SIGUME
1198 signal (SIGUME, fatal_error_signal);
1199 #endif
1200 #ifdef SIGDLK
1201 signal (SIGDLK, fatal_error_signal);
1202 #endif
1203 #ifdef SIGCPULIM
1204 signal (SIGCPULIM, fatal_error_signal);
1205 #endif
1206 #ifdef SIGIOT
1207 /* This is missing on some systems - OS/2, for example. */
1208 signal (SIGIOT, fatal_error_signal);
1209 #endif
1210 #ifdef SIGEMT
1211 signal (SIGEMT, fatal_error_signal);
1212 #endif
1213 signal (SIGFPE, fatal_error_signal);
1214 #ifdef SIGBUS
1215 signal (SIGBUS, fatal_error_signal);
1216 #endif
1217 signal (SIGSEGV, fatal_error_signal);
1218 #ifdef SIGSYS
1219 signal (SIGSYS, fatal_error_signal);
1220 #endif
1221 signal (SIGTERM, fatal_error_signal);
1222 #ifdef SIGXCPU
1223 signal (SIGXCPU, fatal_error_signal);
1224 #endif
1225 #ifdef SIGXFSZ
1226 signal (SIGXFSZ, fatal_error_signal);
1227 #endif /* SIGXFSZ */
1228
1229 #ifdef SIGDANGER
1230 /* This just means available memory is getting low. */
1231 signal (SIGDANGER, memory_warning_signal);
1232 #endif
1233
1234 #ifdef AIX
1235 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1236 signal (SIGXCPU, fatal_error_signal);
1237 #ifndef _I386
1238 signal (SIGIOINT, fatal_error_signal);
1239 #endif
1240 signal (SIGGRANT, fatal_error_signal);
1241 signal (SIGRETRACT, fatal_error_signal);
1242 signal (SIGSOUND, fatal_error_signal);
1243 signal (SIGMSG, fatal_error_signal);
1244 #endif /* AIX */
1245 }
1246
1247 noninteractive1 = noninteractive;
1248
1249 /* Perform basic initializations (not merely interning symbols). */
1250
1251 if (!initialized)
1252 {
1253 init_alloc_once ();
1254 init_obarray ();
1255 init_eval_once ();
1256 init_charset_once ();
1257 init_coding_once ();
1258 init_syntax_once (); /* Create standard syntax table. */
1259 init_category_once (); /* Create standard category table. */
1260 /* Must be done before init_buffer. */
1261 init_casetab_once ();
1262 init_buffer_once (); /* Create buffer table and some buffers. */
1263 init_minibuf_once (); /* Create list of minibuffers. */
1264 /* Must precede init_window_once. */
1265
1266 /* Call syms_of_xfaces before init_window_once because that
1267 function creates Vterminal_frame. Termcap frames now use
1268 faces, and the face implementation uses some symbols as
1269 face names. */
1270 syms_of_xfaces ();
1271 /* Call syms_of_keyboard before init_window_once because
1272 keyboard sets up symbols that include some face names that
1273 the X support will want to use. This can happen when
1274 CANNOT_DUMP is defined. */
1275 syms_of_keyboard ();
1276
1277 #ifdef MAC_OS8
1278 /* init_window_once calls make_terminal_frame which on Mac OS
1279 creates a full-fledge output_mac type frame. This does not
1280 work correctly before syms_of_textprop, syms_of_macfns,
1281 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1282 syms_of_frame, mac_initialize, and init_keyboard have already
1283 been called. */
1284 syms_of_textprop ();
1285 syms_of_macfns ();
1286 syms_of_ccl ();
1287 syms_of_fontset ();
1288 syms_of_macterm ();
1289 syms_of_macmenu ();
1290 syms_of_data ();
1291 syms_of_search ();
1292 syms_of_frame ();
1293
1294 mac_initialize ();
1295 init_keyboard ();
1296 #endif
1297
1298 init_window_once (); /* Init the window system. */
1299 init_fileio_once (); /* Must precede any path manipulation. */
1300 #ifdef HAVE_WINDOW_SYSTEM
1301 init_fringe_once (); /* Swap bitmaps if necessary. */
1302 #endif /* HAVE_WINDOW_SYSTEM */
1303 }
1304
1305 init_alloc ();
1306
1307 if (do_initial_setlocale)
1308 {
1309 fixup_locale ();
1310 Vsystem_messages_locale = Vprevious_system_messages_locale;
1311 Vsystem_time_locale = Vprevious_system_time_locale;
1312 }
1313
1314 init_eval ();
1315 init_data ();
1316 #ifdef CLASH_DETECTION
1317 init_filelock ();
1318 #endif
1319 init_atimer ();
1320 running_asynch_code = 0;
1321
1322 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1323 but not while dumping. */
1324 if (1)
1325 {
1326 int inhibit_unibyte = 0;
1327
1328 /* --multibyte overrides EMACS_UNIBYTE. */
1329 if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args)
1330 || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args)
1331 /* Ignore EMACS_UNIBYTE before dumping. */
1332 || (!initialized && noninteractive))
1333 inhibit_unibyte = 1;
1334
1335 /* --unibyte requests that we set up to do everything with single-byte
1336 buffers and strings. We need to handle this before calling
1337 init_lread, init_editfns and other places that generate Lisp strings
1338 from text in the environment. */
1339 /* Actually this shouldn't be needed as of 20.4 in a generally
1340 unibyte environment. As handa says, environment values
1341 aren't now decoded; also existing buffers are now made
1342 unibyte during startup if .emacs sets unibyte. Tested with
1343 8-bit data in environment variables and /etc/passwd, setting
1344 unibyte and Latin-1 in .emacs. -- Dave Love */
1345 if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args)
1346 || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args)
1347 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte))
1348 {
1349 Lisp_Object old_log_max;
1350 Lisp_Object symbol, tail;
1351
1352 symbol = intern ("default-enable-multibyte-characters");
1353 Fset (symbol, Qnil);
1354
1355 if (initialized)
1356 {
1357 /* Erase pre-dump messages in *Messages* now so no abort. */
1358 old_log_max = Vmessage_log_max;
1359 XSETFASTINT (Vmessage_log_max, 0);
1360 message_dolog ("", 0, 1, 0);
1361 Vmessage_log_max = old_log_max;
1362 }
1363
1364 for (tail = Vbuffer_alist; CONSP (tail);
1365 tail = XCDR (tail))
1366 {
1367 Lisp_Object buffer;
1368
1369 buffer = Fcdr (XCAR (tail));
1370 /* Verify that all buffers are empty now, as they
1371 ought to be. */
1372 if (BUF_Z (XBUFFER (buffer)) > BUF_BEG (XBUFFER (buffer)))
1373 abort ();
1374 /* It is safe to do this crudely in an empty buffer. */
1375 XBUFFER (buffer)->enable_multibyte_characters = Qnil;
1376 }
1377 }
1378 }
1379
1380 no_loadup
1381 = argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args);
1382
1383
1384 #ifdef HAVE_X_WINDOWS
1385 /* Stupid kludge to catch command-line display spec. We can't
1386 handle this argument entirely in window system dependent code
1387 because we don't even know which window system dependent code
1388 to run until we've recognized this argument. */
1389 {
1390 char *displayname = 0;
1391 int count_before = skip_args;
1392
1393 /* Skip any number of -d options, but only use the last one. */
1394 while (1)
1395 {
1396 int count_before_this = skip_args;
1397
1398 if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
1399 display_arg = 1;
1400 else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
1401 display_arg = 1;
1402 else
1403 break;
1404
1405 count_before = count_before_this;
1406 }
1407
1408 /* If we have the form --display=NAME,
1409 convert it into -d name.
1410 This requires inserting a new element into argv. */
1411 if (displayname != 0 && skip_args - count_before == 1)
1412 {
1413 char **new = (char **) xmalloc (sizeof (char *) * (argc + 2));
1414 int j;
1415
1416 for (j = 0; j < count_before + 1; j++)
1417 new[j] = argv[j];
1418 new[count_before + 1] = "-d";
1419 new[count_before + 2] = displayname;
1420 for (j = count_before + 2; j <argc; j++)
1421 new[j + 1] = argv[j];
1422 argv = new;
1423 argc++;
1424 }
1425 /* Change --display to -d, when its arg is separate. */
1426 else if (displayname != 0 && skip_args > count_before
1427 && argv[count_before + 1][1] == '-')
1428 argv[count_before + 1] = "-d";
1429
1430 /* Don't actually discard this arg. */
1431 skip_args = count_before;
1432 }
1433 #endif
1434
1435 /* argmatch must not be used after here,
1436 except when bulding temacs
1437 because the -d argument has not been skipped in skip_args. */
1438
1439 #ifdef MSDOS
1440 /* Call early 'cause init_environment needs it. */
1441 init_dosfns ();
1442 /* Set defaults for several environment variables. */
1443 if (initialized)
1444 init_environment (argc, argv, skip_args);
1445 else
1446 tzset ();
1447 #endif /* MSDOS */
1448
1449 #ifdef WINDOWSNT
1450 globals_of_w32 ();
1451 /* Initialize environment from registry settings. */
1452 init_environment (argv);
1453 init_ntproc (); /* must precede init_editfns. */
1454 #endif
1455
1456 #ifdef HAVE_CARBON
1457 if (initialized)
1458 init_mac_osx_environment ();
1459 #endif
1460
1461 /* egetenv is a pretty low-level facility, which may get called in
1462 many circumstances; it seems flimsy to put off initializing it
1463 until calling init_callproc. */
1464 set_process_environment ();
1465 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1466 if this is not done. Do it after set_process_environment so that we
1467 don't pollute Vprocess_environment. */
1468 /* Setting LANG here will defeat the startup locale processing... */
1469 #ifdef AIX3_2
1470 putenv ("LANG=C");
1471 #endif
1472
1473 init_buffer (); /* Init default directory of main buffer. */
1474
1475 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1476 init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */
1477
1478 if (initialized)
1479 {
1480 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1481 Lisp_Object old_log_max;
1482 old_log_max = Vmessage_log_max;
1483 XSETFASTINT (Vmessage_log_max, 0);
1484 message_dolog ("", 0, 1, 0);
1485 Vmessage_log_max = old_log_max;
1486 }
1487
1488 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1489 init_lread ();
1490
1491 /* Intern the names of all standard functions and variables;
1492 define standard keys. */
1493
1494 if (!initialized)
1495 {
1496 /* The basic levels of Lisp must come first. */
1497 /* And data must come first of all
1498 for the sake of symbols like error-message. */
1499 #ifndef MAC_OS8
1500 /* Called before init_window_once for Mac OS Classic. */
1501 syms_of_data ();
1502 #endif
1503 syms_of_alloc ();
1504 syms_of_lread ();
1505 syms_of_print ();
1506 syms_of_eval ();
1507 syms_of_fns ();
1508 syms_of_floatfns ();
1509
1510 syms_of_abbrev ();
1511 syms_of_buffer ();
1512 syms_of_bytecode ();
1513 syms_of_callint ();
1514 syms_of_casefiddle ();
1515 syms_of_casetab ();
1516 syms_of_callproc ();
1517 syms_of_category ();
1518 #ifndef MAC_OS8
1519 /* Called before init_window_once for Mac OS Classic. */
1520 syms_of_ccl ();
1521 #endif
1522 syms_of_charset ();
1523 syms_of_cmds ();
1524 #ifndef NO_DIR_LIBRARY
1525 syms_of_dired ();
1526 #endif /* not NO_DIR_LIBRARY */
1527 syms_of_display ();
1528 syms_of_doc ();
1529 syms_of_editfns ();
1530 syms_of_emacs ();
1531 syms_of_fileio ();
1532 syms_of_coding (); /* This should be after syms_of_fileio. */
1533 #ifdef CLASH_DETECTION
1534 syms_of_filelock ();
1535 #endif /* CLASH_DETECTION */
1536 syms_of_indent ();
1537 syms_of_insdel ();
1538 syms_of_keymap ();
1539 syms_of_macros ();
1540 syms_of_marker ();
1541 syms_of_minibuf ();
1542 syms_of_process ();
1543 #ifndef MAC_OS8
1544 /* Called before init_window_once for Mac OS Classic. */
1545 syms_of_search ();
1546 syms_of_frame ();
1547 #endif
1548 syms_of_syntax ();
1549 syms_of_term ();
1550 syms_of_undo ();
1551 #ifdef HAVE_SOUND
1552 syms_of_sound ();
1553 #endif
1554 #ifndef MAC_OS8
1555 /* Called before init_window_once for Mac OS Classic. */
1556 syms_of_textprop ();
1557 #endif
1558 syms_of_composite ();
1559 #ifdef VMS
1560 syms_of_vmsproc ();
1561 #endif /* VMS */
1562 #ifdef WINDOWSNT
1563 syms_of_ntproc ();
1564 #endif /* WINDOWSNT */
1565 syms_of_window ();
1566 syms_of_xdisp ();
1567 #ifdef HAVE_WINDOW_SYSTEM
1568 syms_of_fringe ();
1569 syms_of_image ();
1570 #endif /* HAVE_WINDOW_SYSTEM */
1571 #ifdef HAVE_X_WINDOWS
1572 syms_of_xterm ();
1573 syms_of_xfns ();
1574 syms_of_fontset ();
1575 #ifdef HAVE_X_SM
1576 syms_of_xsmfns ();
1577 #endif
1578 #ifdef HAVE_X11
1579 syms_of_xselect ();
1580 #endif
1581 #endif /* HAVE_X_WINDOWS */
1582
1583 #ifdef HAVE_MENUS
1584 #ifndef HAVE_NTGUI
1585 #ifndef MAC_OS
1586 /* Called before init_window_once for Mac OS Classic. */
1587 syms_of_xmenu ();
1588 #endif
1589 #endif
1590 #endif
1591
1592 #ifdef HAVE_NTGUI
1593 syms_of_w32term ();
1594 syms_of_w32fns ();
1595 syms_of_w32select ();
1596 syms_of_w32menu ();
1597 syms_of_fontset ();
1598 #endif /* HAVE_NTGUI */
1599
1600 #ifdef HAVE_CARBON
1601 syms_of_macterm ();
1602 syms_of_macfns ();
1603 syms_of_macmenu ();
1604 syms_of_fontset ();
1605 #endif /* HAVE_CARBON */
1606
1607 #ifdef SYMS_SYSTEM
1608 SYMS_SYSTEM;
1609 #endif
1610
1611 #ifdef SYMS_MACHINE
1612 SYMS_MACHINE;
1613 #endif
1614
1615 keys_of_casefiddle ();
1616 keys_of_cmds ();
1617 keys_of_buffer ();
1618 keys_of_keyboard ();
1619 keys_of_keymap ();
1620 keys_of_minibuf ();
1621 keys_of_window ();
1622 }
1623 else
1624 {
1625 /* Initialization that must be done even if the global variable
1626 initialized is non zero. */
1627 #ifdef HAVE_NTGUI
1628 globals_of_w32fns ();
1629 globals_of_w32menu ();
1630 #endif /* HAVE_NTGUI */
1631 }
1632
1633 if (!noninteractive)
1634 {
1635 #ifdef VMS
1636 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1637 #endif /* VMS */
1638 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1639 }
1640 #ifndef MAC_OS8
1641 /* Called before init_window_once for Mac OS Classic. */
1642 init_keyboard (); /* This too must precede init_sys_modes. */
1643 #endif
1644 #ifdef VMS
1645 init_vmsproc (); /* And this too. */
1646 #endif /* VMS */
1647 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1648 init_fns ();
1649 init_xdisp ();
1650 #ifdef HAVE_WINDOW_SYSTEM
1651 init_fringe ();
1652 init_image ();
1653 #endif /* HAVE_WINDOW_SYSTEM */
1654 init_macros ();
1655 init_editfns ();
1656 init_floatfns ();
1657 #ifdef VMS
1658 init_vmsfns ();
1659 #endif /* VMS */
1660 init_process ();
1661 #ifdef HAVE_SOUND
1662 init_sound ();
1663 #endif
1664 init_window ();
1665
1666 if (!initialized)
1667 {
1668 char *file;
1669 /* Handle -l loadup, args passed by Makefile. */
1670 if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args))
1671 Vtop_level = Fcons (intern ("load"),
1672 Fcons (build_string (file), Qnil));
1673 /* Unless next switch is -nl, load "loadup.el" first thing. */
1674 if (! no_loadup)
1675 Vtop_level = Fcons (intern ("load"),
1676 Fcons (build_string ("loadup.el"), Qnil));
1677 }
1678
1679 if (initialized)
1680 {
1681 #ifdef HAVE_TZSET
1682 {
1683 /* If the execution TZ happens to be the same as the dump TZ,
1684 change it to some other value and then change it back,
1685 to force the underlying implementation to reload the TZ info.
1686 This is needed on implementations that load TZ info from files,
1687 since the TZ file contents may differ between dump and execution. */
1688 char *tz = getenv ("TZ");
1689 if (tz && !strcmp (tz, dump_tz))
1690 {
1691 ++*tz;
1692 tzset ();
1693 --*tz;
1694 }
1695 }
1696 #endif
1697 }
1698
1699 /* Set up for profiling. This is known to work on FreeBSD and
1700 GNU/Linux. It might work on some other systems too. Give it a
1701 try and tell us if it works on your system. To compile for
1702 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1703 #if defined (__FreeBSD__) || defined (__linux)
1704 #ifdef PROFILING
1705 if (initialized)
1706 {
1707 extern void _mcleanup ();
1708 extern char etext;
1709 extern void safe_bcopy ();
1710 extern void dump_opcode_frequencies ();
1711
1712 atexit (_mcleanup);
1713 /* This uses safe_bcopy because that function comes first in the
1714 Emacs executable. It might be better to use something that
1715 gives the start of the text segment, but start_of_text is not
1716 defined on all systems now. */
1717 monstartup (safe_bcopy, &etext);
1718 }
1719 else
1720 moncontrol (0);
1721 #endif
1722 #endif
1723
1724 initialized = 1;
1725
1726 #ifdef LOCALTIME_CACHE
1727 /* Some versions of localtime have a bug. They cache the value of the time
1728 zone rather than looking it up every time. Since localtime() is
1729 called to bolt the undumping time into the undumped emacs, this
1730 results in localtime ignoring the TZ environment variable.
1731 This flushes the new TZ value into localtime. */
1732 tzset ();
1733 #endif /* defined (LOCALTIME_CACHE) */
1734
1735 /* Enter editor command loop. This never returns. */
1736 Frecursive_edit ();
1737 /* NOTREACHED */
1738 return 0;
1739 }
1740 \f
1741 /* Sort the args so we can find the most important ones
1742 at the beginning of argv. */
1743
1744 /* First, here's a table of all the standard options. */
1745
1746 struct standard_args
1747 {
1748 char *name;
1749 char *longname;
1750 int priority;
1751 int nargs;
1752 };
1753
1754 struct standard_args standard_args[] =
1755 {
1756 { "-version", "--version", 150, 0 },
1757 #ifdef HAVE_SHM
1758 { "-nl", "--no-shared-memory", 140, 0 },
1759 #endif
1760 #ifdef VMS
1761 { "-map", "--map-data", 130, 0 },
1762 #endif
1763 { "-t", "--terminal", 120, 1 },
1764 { "-nw", "--no-window-system", 110, 0 },
1765 { "-nw", "--no-windows", 110, 0 },
1766 { "-batch", "--batch", 100, 0 },
1767 { "-script", "--script", 100, 1 },
1768 { "-help", "--help", 90, 0 },
1769 { "-no-unibyte", "--no-unibyte", 83, 0 },
1770 { "-multibyte", "--multibyte", 82, 0 },
1771 { "-unibyte", "--unibyte", 81, 0 },
1772 { "-no-multibyte", "--no-multibyte", 80, 0 },
1773 { "-nl", "--no-loadup", 70, 0 },
1774 /* -d must come last before the options handled in startup.el. */
1775 { "-d", "--display", 60, 1 },
1776 { "-display", 0, 60, 1 },
1777 /* Now for the options handled in startup.el. */
1778 { "-q", "--no-init-file", 50, 0 },
1779 { "-no-init-file", 0, 50, 0 },
1780 { "-no-site-file", "--no-site-file", 40, 0 },
1781 { "-no-splash", "--no-splash", 40, 0 },
1782 { "-u", "--user", 30, 1 },
1783 { "-user", 0, 30, 1 },
1784 { "-debug-init", "--debug-init", 20, 0 },
1785 { "-i", "--icon-type", 15, 0 },
1786 { "-itype", 0, 15, 0 },
1787 { "-iconic", "--iconic", 15, 0 },
1788 { "-bg", "--background-color", 10, 1 },
1789 { "-background", 0, 10, 1 },
1790 { "-fg", "--foreground-color", 10, 1 },
1791 { "-foreground", 0, 10, 1 },
1792 { "-bd", "--border-color", 10, 1 },
1793 { "-bw", "--border-width", 10, 1 },
1794 { "-ib", "--internal-border", 10, 1 },
1795 { "-ms", "--mouse-color", 10, 1 },
1796 { "-cr", "--cursor-color", 10, 1 },
1797 { "-fn", "--font", 10, 1 },
1798 { "-font", 0, 10, 1 },
1799 { "-fs", "--fullscreen", 10, 0 },
1800 { "-fw", "--fullwidth", 10, 0 },
1801 { "-fh", "--fullheight", 10, 0 },
1802 { "-g", "--geometry", 10, 1 },
1803 { "-geometry", 0, 10, 1 },
1804 { "-T", "--title", 10, 1 },
1805 { "-title", 0, 10, 1 },
1806 { "-name", "--name", 10, 1 },
1807 { "-xrm", "--xrm", 10, 1 },
1808 { "-r", "--reverse-video", 5, 0 },
1809 { "-rv", 0, 5, 0 },
1810 { "-reverse", 0, 5, 0 },
1811 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1812 { "-vb", "--vertical-scroll-bars", 5, 0 },
1813 { "-color", "--color", 5, 0},
1814 /* These have the same priority as ordinary file name args,
1815 so they are not reordered with respect to those. */
1816 { "-L", "--directory", 0, 1 },
1817 { "-directory", 0, 0, 1 },
1818 { "-l", "--load", 0, 1 },
1819 { "-load", 0, 0, 1 },
1820 { "-f", "--funcall", 0, 1 },
1821 { "-funcall", 0, 0, 1 },
1822 { "-eval", "--eval", 0, 1 },
1823 { "-execute", "--execute", 0, 1 },
1824 { "-find-file", "--find-file", 0, 1 },
1825 { "-visit", "--visit", 0, 1 },
1826 { "-file", "--file", 0, 1 },
1827 { "-insert", "--insert", 0, 1 },
1828 /* This should be processed after ordinary file name args and the like. */
1829 { "-kill", "--kill", -10, 0 },
1830 };
1831
1832 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1833 so that the highest priority ones come first.
1834 Do not change the order of elements of equal priority.
1835 If an option takes an argument, keep it and its argument together.
1836
1837 If an option that takes no argument appears more
1838 than once, eliminate all but one copy of it. */
1839
1840 static void
1841 sort_args (argc, argv)
1842 int argc;
1843 char **argv;
1844 {
1845 char **new = (char **) xmalloc (sizeof (char *) * argc);
1846 /* For each element of argv,
1847 the corresponding element of options is:
1848 0 for an option that takes no arguments,
1849 1 for an option that takes one argument, etc.
1850 -1 for an ordinary non-option argument. */
1851 int *options = (int *) xmalloc (sizeof (int) * argc);
1852 int *priority = (int *) xmalloc (sizeof (int) * argc);
1853 int to = 1;
1854 int incoming_used = 1;
1855 int from;
1856 int i;
1857
1858 /* Categorize all the options,
1859 and figure out which argv elts are option arguments. */
1860 for (from = 1; from < argc; from++)
1861 {
1862 options[from] = -1;
1863 priority[from] = 0;
1864 if (argv[from][0] == '-')
1865 {
1866 int match, thislen;
1867 char *equals;
1868
1869 /* If we have found "--", don't consider
1870 any more arguments as options. */
1871 if (argv[from][1] == '-' && argv[from][2] == 0)
1872 {
1873 /* Leave the "--", and everything following it, at the end. */
1874 for (; from < argc; from++)
1875 {
1876 priority[from] = -100;
1877 options[from] = -1;
1878 }
1879 break;
1880 }
1881
1882 /* Look for a match with a known old-fashioned option. */
1883 for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1884 if (!strcmp (argv[from], standard_args[i].name))
1885 {
1886 options[from] = standard_args[i].nargs;
1887 priority[from] = standard_args[i].priority;
1888 if (from + standard_args[i].nargs >= argc)
1889 fatal ("Option `%s' requires an argument\n", argv[from]);
1890 from += standard_args[i].nargs;
1891 goto done;
1892 }
1893
1894 /* Look for a match with a known long option.
1895 MATCH is -1 if no match so far, -2 if two or more matches so far,
1896 >= 0 (the table index of the match) if just one match so far. */
1897 if (argv[from][1] == '-')
1898 {
1899 match = -1;
1900 thislen = strlen (argv[from]);
1901 equals = index (argv[from], '=');
1902 if (equals != 0)
1903 thislen = equals - argv[from];
1904
1905 for (i = 0;
1906 i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1907 if (standard_args[i].longname
1908 && !strncmp (argv[from], standard_args[i].longname,
1909 thislen))
1910 {
1911 if (match == -1)
1912 match = i;
1913 else
1914 match = -2;
1915 }
1916
1917 /* If we found exactly one match, use that. */
1918 if (match >= 0)
1919 {
1920 options[from] = standard_args[match].nargs;
1921 priority[from] = standard_args[match].priority;
1922 /* If --OPTION=VALUE syntax is used,
1923 this option uses just one argv element. */
1924 if (equals != 0)
1925 options[from] = 0;
1926 if (from + options[from] >= argc)
1927 fatal ("Option `%s' requires an argument\n", argv[from]);
1928 from += options[from];
1929 }
1930 }
1931 done: ;
1932 }
1933 }
1934
1935 /* Copy the arguments, in order of decreasing priority, to NEW. */
1936 new[0] = argv[0];
1937 while (incoming_used < argc)
1938 {
1939 int best = -1;
1940 int best_priority = -9999;
1941
1942 /* Find the highest priority remaining option.
1943 If several have equal priority, take the first of them. */
1944 for (from = 1; from < argc; from++)
1945 {
1946 if (argv[from] != 0 && priority[from] > best_priority)
1947 {
1948 best_priority = priority[from];
1949 best = from;
1950 }
1951 /* Skip option arguments--they are tied to the options. */
1952 if (options[from] > 0)
1953 from += options[from];
1954 }
1955
1956 if (best < 0)
1957 abort ();
1958
1959 /* Copy the highest priority remaining option, with its args, to NEW.
1960 Unless it is a duplicate of the previous one. */
1961 if (! (options[best] == 0
1962 && ! strcmp (new[to - 1], argv[best])))
1963 {
1964 new[to++] = argv[best];
1965 for (i = 0; i < options[best]; i++)
1966 new[to++] = argv[best + i + 1];
1967 }
1968
1969 incoming_used += 1 + (options[best] > 0 ? options[best] : 0);
1970
1971 /* Clear out this option in ARGV. */
1972 argv[best] = 0;
1973 for (i = 0; i < options[best]; i++)
1974 argv[best + i + 1] = 0;
1975 }
1976
1977 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1978 while (to < argc)
1979 new[to++] = 0;
1980
1981 bcopy (new, argv, sizeof (char *) * argc);
1982
1983 free (options);
1984 free (new);
1985 free (priority);
1986 }
1987 \f
1988 DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P",
1989 doc: /* Exit the Emacs job and kill it.
1990 If ARG is an integer, return ARG as the exit program code.
1991 If ARG is a string, stuff it as keyboard input.
1992
1993 The value of `kill-emacs-hook', if not void,
1994 is a list of functions (of no args),
1995 all of which are called before Emacs is actually killed. */)
1996 (arg)
1997 Lisp_Object arg;
1998 {
1999 struct gcpro gcpro1;
2000
2001 GCPRO1 (arg);
2002
2003 if (feof (stdin))
2004 arg = Qt;
2005
2006 if (!NILP (Vrun_hooks) && !noninteractive)
2007 call1 (Vrun_hooks, intern ("kill-emacs-hook"));
2008
2009 UNGCPRO;
2010
2011 /* Is it really necessary to do this deassign
2012 when we are going to exit anyway? */
2013 /* #ifdef VMS
2014 stop_vms_input ();
2015 #endif */
2016
2017 shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil);
2018
2019 /* If we have an auto-save list file,
2020 kill it because we are exiting Emacs deliberately (not crashing).
2021 Do it after shut_down_emacs, which does an auto-save. */
2022 if (STRINGP (Vauto_save_list_file_name))
2023 unlink (SDATA (Vauto_save_list_file_name));
2024
2025 exit (INTEGERP (arg) ? XINT (arg)
2026 #ifdef VMS
2027 : 1
2028 #else
2029 : 0
2030 #endif
2031 );
2032 /* NOTREACHED */
2033 }
2034
2035
2036 /* Perform an orderly shutdown of Emacs. Autosave any modified
2037 buffers, kill any child processes, clean up the terminal modes (if
2038 we're in the foreground), and other stuff like that. Don't perform
2039 any redisplay; this may be called when Emacs is shutting down in
2040 the background, or after its X connection has died.
2041
2042 If SIG is a signal number, print a message for it.
2043
2044 This is called by fatal signal handlers, X protocol error handlers,
2045 and Fkill_emacs. */
2046
2047 void
2048 shut_down_emacs (sig, no_x, stuff)
2049 int sig, no_x;
2050 Lisp_Object stuff;
2051 {
2052 /* Prevent running of hooks from now on. */
2053 Vrun_hooks = Qnil;
2054
2055 /* Don't update display from now on. */
2056 Vinhibit_redisplay = Qt;
2057
2058 /* If we are controlling the terminal, reset terminal modes. */
2059 #ifdef EMACS_HAVE_TTY_PGRP
2060 {
2061 int pgrp = EMACS_GETPGRP (0);
2062
2063 int tpgrp;
2064 if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1
2065 && tpgrp == pgrp)
2066 {
2067 fflush (stdout);
2068 reset_sys_modes ();
2069 if (sig && sig != SIGTERM)
2070 fprintf (stderr, "Fatal error (%d)", sig);
2071 }
2072 }
2073 #else
2074 fflush (stdout);
2075 reset_sys_modes ();
2076 #endif
2077
2078 stuff_buffered_input (stuff);
2079
2080 kill_buffer_processes (Qnil);
2081 Fdo_auto_save (Qt, Qnil);
2082
2083 #ifdef CLASH_DETECTION
2084 unlock_all_files ();
2085 #endif
2086
2087 #ifdef VMS
2088 kill_vms_processes ();
2089 #endif
2090
2091 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2092 #ifdef HAVE_X_WINDOWS
2093 /* It's not safe to call intern here. Maybe we are crashing. */
2094 if (!noninteractive && SYMBOLP (Vwindow_system)
2095 && SCHARS (SYMBOL_NAME (Vwindow_system)) == 1
2096 && SREF (SYMBOL_NAME (Vwindow_system), 0) == 'x'
2097 && ! no_x)
2098 Fx_close_current_connection ();
2099 #endif /* HAVE_X_WINDOWS */
2100 #endif
2101
2102 #ifdef SIGIO
2103 /* There is a tendency for a SIGIO signal to arrive within exit,
2104 and cause a SIGHUP because the input descriptor is already closed. */
2105 unrequest_sigio ();
2106 signal (SIGIO, SIG_IGN);
2107 #endif
2108
2109 #ifdef WINDOWSNT
2110 term_ntproc ();
2111 #endif
2112
2113 /* Do this only if terminating normally, we want glyph matrices
2114 etc. in a core dump. */
2115 if (sig == 0 || sig == SIGTERM)
2116 {
2117 check_glyph_memory ();
2118 check_message_stack ();
2119 }
2120
2121 #ifdef MSDOS
2122 dos_cleanup ();
2123 #endif
2124 }
2125
2126
2127 \f
2128 #ifndef CANNOT_DUMP
2129
2130 #ifdef HAVE_SHM
2131
2132 DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0,
2133 doc: /* Dump current state of Emacs into data file FILENAME.
2134 This function exists on systems that use HAVE_SHM. */)
2135 (filename)
2136 Lisp_Object filename;
2137 {
2138 extern char my_edata[];
2139 Lisp_Object tem;
2140
2141 check_pure_size ();
2142 CHECK_STRING (filename);
2143 filename = Fexpand_file_name (filename, Qnil);
2144
2145 tem = Vpurify_flag;
2146 Vpurify_flag = Qnil;
2147
2148 fflush (stdout);
2149 /* Tell malloc where start of impure now is. */
2150 /* Also arrange for warnings when nearly out of space. */
2151 #ifndef SYSTEM_MALLOC
2152 memory_warnings (my_edata, malloc_warning);
2153 #endif
2154 map_out_data (SDATA (filename));
2155
2156 Vpurify_flag = tem;
2157
2158 return Qnil;
2159 }
2160
2161 #else /* not HAVE_SHM */
2162
2163 DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0,
2164 doc: /* Dump current state of Emacs into executable file FILENAME.
2165 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2166 This is used in the file `loadup.el' when building Emacs.
2167
2168 You must run Emacs in batch mode in order to dump it. */)
2169 (filename, symfile)
2170 Lisp_Object filename, symfile;
2171 {
2172 extern char my_edata[];
2173 Lisp_Object tem;
2174 Lisp_Object symbol;
2175 int count = SPECPDL_INDEX ();
2176
2177 check_pure_size ();
2178
2179 if (! noninteractive)
2180 error ("Dumping Emacs works only in batch mode");
2181
2182 #ifdef __linux__
2183 if (heap_bss_diff > MAX_HEAP_BSS_DIFF)
2184 {
2185 fprintf (stderr, "**************************************************\n");
2186 fprintf (stderr, "Warning: Your system has a gap between BSS and the\n");
2187 fprintf (stderr, "heap (%lu byte). This usually means that exec-shield\n",
2188 heap_bss_diff);
2189 fprintf (stderr, "or something similar is in effect. The dump may\n");
2190 fprintf (stderr, "fail because of this. See the section about \n");
2191 fprintf (stderr, "exec-shield in etc/PROBLEMS for more information.\n");
2192 fprintf (stderr, "**************************************************\n");
2193 }
2194 #endif /* __linux__ */
2195
2196 /* Bind `command-line-processed' to nil before dumping,
2197 so that the dumped Emacs will process its command line
2198 and set up to work with X windows if appropriate. */
2199 symbol = intern ("command-line-processed");
2200 specbind (symbol, Qnil);
2201
2202 CHECK_STRING (filename);
2203 filename = Fexpand_file_name (filename, Qnil);
2204 if (!NILP (symfile))
2205 {
2206 CHECK_STRING (symfile);
2207 if (SCHARS (symfile))
2208 symfile = Fexpand_file_name (symfile, Qnil);
2209 }
2210
2211 tem = Vpurify_flag;
2212 Vpurify_flag = Qnil;
2213
2214 #ifdef HAVE_TZSET
2215 set_time_zone_rule (dump_tz);
2216 #ifndef LOCALTIME_CACHE
2217 /* Force a tz reload, since set_time_zone_rule doesn't. */
2218 tzset ();
2219 #endif
2220 #endif
2221
2222 fflush (stdout);
2223 #ifdef VMS
2224 mapout_data (SDATA (filename));
2225 #else
2226 /* Tell malloc where start of impure now is. */
2227 /* Also arrange for warnings when nearly out of space. */
2228 #ifndef SYSTEM_MALLOC
2229 #ifndef WINDOWSNT
2230 /* On Windows, this was done before dumping, and that once suffices.
2231 Meanwhile, my_edata is not valid on Windows. */
2232 memory_warnings (my_edata, malloc_warning);
2233 #endif /* not WINDOWSNT */
2234 #endif
2235 #ifdef DOUG_LEA_MALLOC
2236 malloc_state_ptr = malloc_get_state ();
2237 #endif
2238
2239 #ifdef USE_MMAP_FOR_BUFFERS
2240 mmap_set_vars (0);
2241 #endif
2242 unexec (SDATA (filename),
2243 !NILP (symfile) ? SDATA (symfile) : 0, my_edata, 0, 0);
2244 #ifdef USE_MMAP_FOR_BUFFERS
2245 mmap_set_vars (1);
2246 #endif
2247 #ifdef DOUG_LEA_MALLOC
2248 free (malloc_state_ptr);
2249 #endif
2250 #endif /* not VMS */
2251
2252 Vpurify_flag = tem;
2253
2254 return unbind_to (count, Qnil);
2255 }
2256
2257 #endif /* not HAVE_SHM */
2258
2259 #endif /* not CANNOT_DUMP */
2260 \f
2261 #if HAVE_SETLOCALE
2262 /* Recover from setlocale (LC_ALL, ""). */
2263 void
2264 fixup_locale ()
2265 {
2266 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2267 so that numbers are read and printed properly for Emacs Lisp. */
2268 setlocale (LC_NUMERIC, "C");
2269 }
2270
2271 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2272 DESIRED_LOCALE. */
2273 static void
2274 synchronize_locale (category, plocale, desired_locale)
2275 int category;
2276 Lisp_Object *plocale;
2277 Lisp_Object desired_locale;
2278 {
2279 if (! EQ (*plocale, desired_locale))
2280 {
2281 *plocale = desired_locale;
2282 setlocale (category, (STRINGP (desired_locale)
2283 ? (char *) SDATA (desired_locale)
2284 : ""));
2285 }
2286 }
2287
2288 /* Set system time locale to match Vsystem_time_locale, if possible. */
2289 void
2290 synchronize_system_time_locale ()
2291 {
2292 synchronize_locale (LC_TIME, &Vprevious_system_time_locale,
2293 Vsystem_time_locale);
2294 }
2295
2296 /* Set system messages locale to match Vsystem_messages_locale, if
2297 possible. */
2298 void
2299 synchronize_system_messages_locale ()
2300 {
2301 #ifdef LC_MESSAGES
2302 synchronize_locale (LC_MESSAGES, &Vprevious_system_messages_locale,
2303 Vsystem_messages_locale);
2304 #endif
2305 }
2306 #endif /* HAVE_SETLOCALE */
2307 \f
2308 #ifndef SEPCHAR
2309 #define SEPCHAR ':'
2310 #endif
2311
2312 Lisp_Object
2313 decode_env_path (evarname, defalt)
2314 char *evarname, *defalt;
2315 {
2316 register char *path, *p;
2317 Lisp_Object lpath, element, tem;
2318
2319 /* It's okay to use getenv here, because this function is only used
2320 to initialize variables when Emacs starts up, and isn't called
2321 after that. */
2322 if (evarname != 0)
2323 path = (char *) getenv (evarname);
2324 else
2325 path = 0;
2326 if (!path)
2327 path = defalt;
2328 #ifdef DOS_NT
2329 /* Ensure values from the environment use the proper directory separator. */
2330 if (path)
2331 {
2332 p = alloca (strlen (path) + 1);
2333 strcpy (p, path);
2334 path = p;
2335
2336 if ('/' == DIRECTORY_SEP)
2337 dostounix_filename (path);
2338 else
2339 unixtodos_filename (path);
2340 }
2341 #endif
2342 lpath = Qnil;
2343 while (1)
2344 {
2345 p = index (path, SEPCHAR);
2346 if (!p) p = path + strlen (path);
2347 element = (p - path ? make_string (path, p - path)
2348 : build_string ("."));
2349
2350 /* Add /: to the front of the name
2351 if it would otherwise be treated as magic. */
2352 tem = Ffind_file_name_handler (element, Qt);
2353
2354 /* However, if the handler says "I'm safe",
2355 don't bother adding /:. */
2356 if (SYMBOLP (tem))
2357 {
2358 Lisp_Object prop;
2359 prop = Fget (tem, intern ("safe-magic"));
2360 if (! NILP (prop))
2361 tem = Qnil;
2362 }
2363
2364 if (! NILP (tem))
2365 element = concat2 (build_string ("/:"), element);
2366
2367 lpath = Fcons (element, lpath);
2368 if (*p)
2369 path = p + 1;
2370 else
2371 break;
2372 }
2373 return Fnreverse (lpath);
2374 }
2375
2376 void
2377 syms_of_emacs ()
2378 {
2379 Qfile_name_handler_alist = intern ("file-name-handler-alist");
2380 staticpro (&Qfile_name_handler_alist);
2381
2382 #ifndef CANNOT_DUMP
2383 #ifdef HAVE_SHM
2384 defsubr (&Sdump_emacs_data);
2385 #else
2386 defsubr (&Sdump_emacs);
2387 #endif
2388 #endif
2389
2390 defsubr (&Skill_emacs);
2391
2392 defsubr (&Sinvocation_name);
2393 defsubr (&Sinvocation_directory);
2394
2395 DEFVAR_LISP ("command-line-args", &Vcommand_line_args,
2396 doc: /* Args passed by shell to Emacs, as a list of strings.
2397 Many arguments are deleted from the list as they are processed. */);
2398
2399 DEFVAR_LISP ("system-type", &Vsystem_type,
2400 doc: /* Value is symbol indicating type of operating system you are using. */);
2401 Vsystem_type = intern (SYSTEM_TYPE);
2402
2403 DEFVAR_LISP ("system-configuration", &Vsystem_configuration,
2404 doc: /* Value is string indicating configuration Emacs was built for.
2405 On MS-Windows, the value reflects the OS flavor and version on which
2406 Emacs is running. */);
2407 Vsystem_configuration = build_string (EMACS_CONFIGURATION);
2408
2409 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options,
2410 doc: /* String containing the configuration options Emacs was built with. */);
2411 Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS);
2412
2413 DEFVAR_BOOL ("noninteractive", &noninteractive1,
2414 doc: /* Non-nil means Emacs is running without interactive terminal. */);
2415
2416 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook,
2417 doc: /* Hook to be run when kill-emacs is called.
2418 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2419 in other similar situations), functions placed on this hook should not
2420 expect to be able to interact with the user. To ask for confirmation,
2421 see `kill-emacs-query-functions' instead.
2422
2423 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2424 Vkill_emacs_hook = Qnil;
2425
2426 empty_string = build_string ("");
2427 staticpro (&empty_string);
2428
2429 DEFVAR_INT ("emacs-priority", &emacs_priority,
2430 doc: /* Priority for Emacs to run at.
2431 This value is effective only if set before Emacs is dumped,
2432 and only if the Emacs executable is installed with setuid to permit
2433 it to change priority. (Emacs sets its uid back to the real uid.)
2434 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2435 before you compile Emacs, to enable the code for this feature. */);
2436 emacs_priority = 0;
2437
2438 DEFVAR_LISP ("path-separator", &Vpath_separator,
2439 doc: /* The directory separator in search paths, as a string. */);
2440 {
2441 char c = SEPCHAR;
2442 Vpath_separator = make_string (&c, 1);
2443 }
2444
2445 DEFVAR_LISP ("invocation-name", &Vinvocation_name,
2446 doc: /* The program name that was used to run Emacs.
2447 Any directory names are omitted. */);
2448
2449 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory,
2450 doc: /* The directory in which the Emacs executable was found, to run it.
2451 The value is nil if that directory's name is not known. */);
2452
2453 DEFVAR_LISP ("installation-directory", &Vinstallation_directory,
2454 doc: /* A directory within which to look for the `lib-src' and `etc' directories.
2455 This is non-nil when we can't find those directories in their standard
2456 installed locations, but we can find them
2457 near where the Emacs executable was found. */);
2458 Vinstallation_directory = Qnil;
2459
2460 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale,
2461 doc: /* System locale for messages. */);
2462 Vsystem_messages_locale = Qnil;
2463
2464 DEFVAR_LISP ("previous-system-messages-locale",
2465 &Vprevious_system_messages_locale,
2466 doc: /* Most recently used system locale for messages. */);
2467 Vprevious_system_messages_locale = Qnil;
2468
2469 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale,
2470 doc: /* System locale for time. */);
2471 Vsystem_time_locale = Qnil;
2472
2473 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale,
2474 doc: /* Most recently used system locale for time. */);
2475 Vprevious_system_time_locale = Qnil;
2476 }
2477
2478 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2479 (do not change this comment) */